adj.乏味的，平凡的，无特色的，不吸引人的

The painting was rather undistinguished, lacking any unique or compelling features.
这幅画相当平庸，没有任何独特或引人注目的特征。
Despite his family's prestigious background, he remained an undistinguished member of the society.
尽管他的家族背景显赫，但他仍然是社会中一个默默无闻的一员。
Her performance in the play was disappointingly undistinguished; it failed to leave a lasting impression on the audience.
她在剧中的表演令人失望地平庸，未能给观众留下深刻印象。
The restaurant served an undistinguished meal, consisting mainly of bland and unremarkable dishes.
餐厅提供的餐食平淡无奇，主要是些乏味且不引人注意的菜肴。
He was an undistinguished student, consistently receiving average grades without ever standing out academically.
他是个成绩平平的学生，始终获得平均分，从未在学业上崭露头角。
The architecture of the building was undistinguished, blending in seamlessly with countless other mundane structures in the city.
这座建筑的风格并无特色，与城市中无数其他平凡的建筑毫无二致地融合在一起。
Despite her tireless efforts, her novel received only lukewarm reviews, being labeled as undistinguished among the year's literary offerings.
尽管她付出了不懈的努力，但她的小说只得到了冷淡的评价，被认定为当年文学作品中平庸之作。
The politician's speech was undistinguished, filled with platitudes and lacking any fresh ideas or inspiring rhetoric.
这位政客的演讲平淡无奇，充满了陈词滥调，缺乏任何新颖的观点或鼓舞人心的修辞。
The athlete's performance this season has been undistinguished, failing to meet the high standards set by their previous achievements.
这位运动员本赛季的表现平平，未能达到其先前成就所设定的高标准。
Despite its historical significance, the artifact was surprisingly undistinguished in appearance, appearing no different from common household items of the era.
尽管具有历史意义，这件文物的外观却出奇地平庸，看上去与那个时代的普通家居用品并无二致。